Plugable 2-Port USB Power Bank (5,000mAh) + Pass-Through AC Wall Outlet Smart Charger for Android, Apple iOS, and Windows Mobile Devices The Plugable PB-WA5K is a lightweight combination high-capacity USB portable battery pack and AC wall outlet USB smart charger. Whether on the go or at home you can use this portable battery to provide the extra power to keep your portable devices running all day long. The unique design allows you to smart charge your devices and the PB-WA5Ks internal battery at the same time when connected to an AC outlet. Straightforward and elegant design. Unique shake to power on feature. Mutli-color status LED indicator. Charges from any US AC wall outlet. Two dedicated smart charging ports that automatically select the best charging mechanism for the device (Apple 1A, Apple 2A, Apple 2.4A, Samsung 2.4A, Android, BC 1.2). Can supply up to 2.4A per port (3.4A, 17W total when connected to AC outlet) and up to 2.2A per port, (2.2A, 11W total when on battery mode). Charges almost all Apple iOS, Google Android, and Microsoft Windows Mobile devices. Small Windows tablets like the Dell Venue 8 Pro are also supported.